Ethicist: The most advanced kind of moral motivation is based solely on abstract principles.
Principle
The most advanced kind of moral motivation is based solely on abstract principles (not calculated self-interest or trying to conform to society's norms and conventions.)
Goal
Since the question stem asks us to pick an example of the most advanced kind of moral motivation, we'll get rid of any answers where the motivation involves self-interest or trying to conform to society's customs, and we'll pick one where the motivation is just about some abstract principle of morality.